iaid endianness/signed incorrect

[Frederik Kriewitz]

iaid is incorrectly unpacked (wrong endianess and as signed integer), it should be:
self.iaid = struct.unpack('<I', self.host_identifier[0:4])[0]
instead of
self.iaid = struct.unpack('>i', self.host_identifier[0:4])[0

[Martijn Braam]

Oops, changed it